Taito X2 BIOS dumping

Okay, so a buddy of mine is buying a busted X2 board, some form of BIOS damage to the point where it won't boot. What we're going to try and do is take a working SF4 and dump the BIOS on it then re-flash the damaged one, only problem is I have no clue how to do a BIOS dump on this guy.... anyone got any insight?

Bios on the x2 is encrypted and a special format all itself. I have a x2 here that i am playing with as well. Pm me